Picture frame



FIG. 1 is a perspective view of a picture frame showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view thereof, the opposite side being a mirror image;

FIG. 6 is a front elevational view thereof with the ribbon portion removed;

FIG. 7 is top plan view thereof; and,

FIG. 8 is left side elevational view thereof. 

The ornamental design for a picture frame, as shown and described. 